UPDATE
The Measurements you'd have found when the
markers were still there were:
North: 15
West: 22

The co-ordinates will take you to a stone bridge where you will need to take two measurements in metres. Round both to the nearest m.
On the North side of the bridge, measure between the post with the green reflector and the North edge of the stone bridge. On the south side of the bridge, measure between the yellow and black striped sign and the post with the red reflector.
The cache contains a logbook and themed swag; please take only one per Member, and please do not leave any traders in the cache. If kits are running low, we'd appreciate a mention in the log so we can replenish the swag for future visitors. BYOP. Thank you.
*which is distinct from/far easier to digest than E=mc2--we just liked the name. That's all.**
**Really: please don't write and tell us this cache does NOT explain Professor Einstein's theory of the same name; there are great books by really smart people (like Stephen Hawking) which do, but THEY don't offer a smiley!